Mary Lincoln's brother George R.C. Todd and her half-brothers Alexander Todd, David Todd, and Samuel Todd all fought in the Confederate Army during the Civil War. Alexander Todd was killed at Baton Rouge.
Samuel Todd was killed in the Battle of Shiloh.
David Todd was wounded at Vicksburg.
Her half-sister Emilie Helm's husband was a Confederate general killed at Chickamauga.
The husbands of her half-sisters, Martha White and Elodie Dawson were ardent supporters of the Confederacy.